// 云函数入口文件
const cloud = require('wx-server-sdk')

cloud.init()
const db = cloud.database();
// 云函数入口函数
exports.main = async (event, context) => {
  const wxContext = cloud.getWXContext()
  try{
    return await	db.collection("joinroom").aggregate()
    .lookup({
      from: "user",
      localField: "_openid",
      foreignField: "_openid",
      as: "usersInfo",
    })
    .match({
      roomid: event.roomid
    })
    .end()

  }catch(e){
    return {
      error:e
    }

  }
  // return {
  //   event,
  //   openid: wxContext.OPENID,
  //   appid: wxContext.APPID,
  //   unionid: wxContext.UNIONID,
  // }
}